Feedback, disk self-regulation, and galaxy formation

被引：272
|
作者：
Silk, J
机构：
[1] UNIV CALIF BERKELEY, DEPT PHYS, BERKELEY, CA 94720 USA
[2] UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA
来源：
ASTROPHYSICAL JOURNAL | 1997年 / 481卷 / 02期
关键词：
galaxies; formation; ISM; kinematics and dynamics; stellar content;
D O I：
10.1086/304073
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Self-regulation of star formation in disks is controlled by two dimensionless parameters: the Toomre parameter for gravitational instability and the porosity of the interstellar medium to supernova remnant-heated gas. An interplay between these leads to expressions for the gas velocity dispersion, gas fraction, star formation rate and star formation efficiency in disks and to a possible explanation of the Tully-Fisher relation. I further develop feedback arguments that arise from the impact of massive star formation and death on protogalaxies in order to account for the characteristic luminosity of a galaxy and for early winds from forming spheroids.
引用
收藏
页码：703 / 709
页数：7
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